Screen.



No. 869,315. PATENTED 0013.29. 1907. I

J. L. MALLORY.

SCREEN.

APPLIOATION FILED SBPT.11, 1905.

JAMES L. MALLORY, OF EVANSTON, ILLINOIS.

SCREEN.

Specification of Letters Patent.

Patented Oct. 29, 1907.

Application filed September 11 1905- geriel No. 277.929.

To all whom it may concern:

Be it known that I, .TAirns L. MALLORY, a citizen of the United States, residing at Evanston, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Screens, of which the following is a specification.

My invention relates to improvements in screens, and has for its object the production of a simple and durable screen and one that is adapted to rid a dwelling of .all objectionable winged insects.

A further object is the production of a screen that, while affording all the advantages above described, presents no different appearance from an ordinary screen.

These and such other objects as may hereafter appear are obtained by my invention, one embodiment of which is illustrated in the accompanying drawings, in which Figure 1 illustrates a front elevation of my improved screen. Fig. 2 shows a vertical sectional detail along the line 2-2 of Fig. 1. Fig. 3 shows a similar detail of a modified embodiment of my invention.

Like letters of reference indicate like parts in the several figures of the drawing.

Referring by letter to the accompanying drawings, A represents the frame of a window screen, B the bead surrounding said frame and holding thescreen material C in place.

The screen surface 0 is composed preferably of two sections or members 0 0, so arranged as to leave a horizontal opening between the inner ends thereof, as at D, and preferably arranged in substantially the same vertical plane.

In Fig. 2 the upper portion of the lower screen member c is pivoted at h and a lever l is secured thereto, whereby the upper movable portion or can be swung inwardly against the upper member 0, thus closing the channel f It is evident that there are various modifications that can be made in this device, the essential element of which is the making of the screen in sections, preferably two in number, and leaving between the adjacent ends of the sections an opening, preferably extending entirely across the screen surface and providing means whereby one screen section may be swung open or closed. Thus, as shown in Fig. 3, the upper screen member 0' may be secured to a support which is pivoted at H and a lever such as the bell-crank lever L may be secured to the side of the frame and in engagement with the screen member 0 whereby such member may be swung upwardly until the portion G abuts the upper portion of the lower member 0 at M thus closing the horizontal channel between the screen members.

It will be seen that my invention possesses two characteristic features, first the channel between the screen members may be readily opened and closed by the movement of a pivoted lever regardless of whether or not the screen members are in substantially the same plane, and, second, the screen members may be arranged in substantially the same plane so as not to unnecessarily complicate the screen structure and at the same time the channel betrieen the screen members may be opened or closed in any suitable manner, and any suitable locking mechanism may be used to hold the movable screen member in open or closed position.

It is a fact capable of demonstration that winged insects when striking against or lighting upon a screen attempt to escape upward. This being the case, any opening provided in a screen through v. .hich the insects may make their way outside of the room will serve to automatically rid a room of their presence.

By providing an opening in a screen as shown, I take advantage of the fact that flies and like insects usually walk upwards upon a screen. Consequently they v'ill walk upwards through the opening and escape. Whereas to enter through the screen they must walk down wardly, consequently few, if any, insects will enter in that manner, especially if, as in my preferred construction, the passage through the screen be arranged near the upper edge of the screen.

Obviously, both screen members need not be made of screening.

1 claim:

1. The combination of a frame, two screen members mounted thereon and overlapping each other so as to provide a passage thercbctwccn, one of said overlapping parts being movable. and a lever pivoted to said frame and secured to said movable overlapping part whereby the said passage may be opened and closed at will.

2. The combination with a frame of two screen mem bcrs the main parts of which are mounted in said frame and in substantially the same plane, said screen members being arranged with overlapping edges whereby a passage is provided therehctween, one of said edges being movable and a pivoted member to which said movable edge is se cured so that said passage may be opened or closed at will.

ii. The combination with a frame, of a fixed screen section, a movable section in the same plane with the fixed section when in its closing position, and means for moving the movable section out of: alinement with the fixed section so as to leave a space between the same.

JAMES L. MALLORY.

Witnesses i F. 11. Dnunr, H. L. PECK. 

